Results 261 to 270 of about 142,903 (317)

pH Indicators As Chemical Reagents for the Enhancement of Footwear Marks

open access: closedJournal of Forensic Sciences, 1996
Abstract Enhancement of weak two-dimensional shoemarks is often necessary due to the poor image detail. Thiocyanate is regarded in the literature as the most effective reagent for the chemical enhancement of footwear marks. In this study we have examined the possibility of using pH indicators, Bromophenol Blue and Bromocresol Green, as ...
B Glattstein   +3 more
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An examination of chlorpromazine hydrochloride as indicator and spectrophotometric reagent for the determination of molybdenum(V)

open access: closedAnalytica Chimica Acta, 1977
Abstract Chlorpromazine hydrochloride (CPA) has been tested as indicator in the titration of molybdenurn(V) with cerium(IV)sulphate at room temperature in sulphuric acid medium. It gives a sharp, reversible colour change from colourless to dark-red at the equivalence point.
Helena Puzanowska‐Tarasiewicz   +2 more
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Titrimetric determination of sodium dithionite with potassium hexacyanoferrate(III) as reagent and methylene blue as indicator

open access: closedFresenius' Zeitschrift für analytische Chemie, 1967
A rapid titration procedure is recommended for the estimation of Na2S2O4 in commercial sodium dithionite (sodium hydrosulphite, sodium hyposulphite) and in aqueous solutions of this compound, using potassium hexacyanoferrate(III) as reagent and methylene blue as indicator.
D. C. de Groot
openalex   +3 more sources

Rapid Test Determination of Iron(II) in Aqueous Media by Reagent Indicator Paper

open access: closedJournal of Analytical Chemistry, 2004
A reagent indicator paper with immobilized zirconyl hexacyanoferrate(III) is prepared for the preconcentration and determination of 0.05–500 mg/L of iron(II) in the presence of more than 100-fold amount of iron(III). The paper is stable in the presence of up to 200 mg/L of 1,1-dimethylhydrazine.
V. M. Ostrovskaya   +3 more
openalex   +3 more sources

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